| <!DOCTYPE html> |
| <html> |
| <title>View transitions: skipTransition() invoked before a synchronous updateDOM callback is invoked</title> |
| <link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/"> |
| <link rel="author" href="mailto:khushalsagar@chromium.org"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| #first { |
| width: 100px; |
| height: 100px; |
| background: blue; |
| contain: paint; |
| } |
| </style> |
| |
| <div id=first></div> |
| |
| <script> |
| promise_test(async t => { |
| assert_implements(document.startViewTransition, "Missing document.startViewTransition"); |
| return new Promise(async (resolve, reject) => { |
| let transition = document.startViewTransition(() => { |
| first.style.viewTransitionName = "target"; |
| }); |
| transition.skipTransition(); |
| // The phase of |transition| is not done, so skip the view transition with |
| // an "AbortError" DOMException. |
| // https://drafts.csswg.org/css-view-transitions-1/#ViewTransition-skipTransition |
| await promise_rejects_dom(t, "AbortError", transition.ready); |
| await transition.finished; |
| |
| if (window.getComputedStyle(first).viewTransitionName == "target") |
| resolve(); |
| else |
| reject(); |
| }); |
| }, "finished promise should be resolved if skipTransition() is invoked before a synchronous updateCallbackDone callback is dispatched"); |
| </script> |
